Star Tech Journal

February 1996
CID
STAR*TEcH
Journal
MODIFICATION OF RELAY BOARD TO SUPPRESS BACK-EMF VOLTAGE SPIKES
Figure 1
Figure 2
Playfield Bottom View.
Edge on Back Box.
"
7
x
0
co
SOL 20
SOl 21
1/0 Power
Driver Board
Wiring Diagram
UP/DOWN POST
Lower Right Corner View
COIN
Q23
wm•
VIO/YEL
ROCKET RELAY
MOON RELAY
VIO/ORG
ADD
VARISTOR
Z1
15C470KM
.2
o
D....
<(
4-
!:::
·,;]
•'j:
:~~
Modify the Moon Au x.
Relay Bd. (Vio/Org) only.
0
3:
(I)
>
•-·-·-· ---'
Jif
Ii
•
'Q;,
~
•
Playfield Bottom View
Edge in Cabinet.
/•,:/
8
t'~-~•)'
l
Identify the Aux. Relay
Board (Moon) with the
Vio/Org wire connection.
0 520-5009/10-00
MACE ZN U.S .A.
O
0
9523

Jumper
here (J1)
1-0
l< 1
R1
~ ~
D1
0
6 xisting'
Diode
. . -he-re (Z1)
0
0
Varistor
Relay
Component side of Board.
Figure :3
0